HHM1524B1

Balun Overview

The HHM1524B1 is a signal conditioning LTCC balun manufactured by TDK Corporation. It operates within the frequency range of 824 MHz to 894 MHz, covering cellular bands such as GSM and DCS. The component features an unbalanced port with a nominal characteristic impedance of 50 Ohms and a balanced port with a nominal characteristic impedance of 150 Ohms. Designed for surface-mount applications, it utilizes a compact package suitable for automated assembly processes in electronic circuits requiring RF signal conversion.

Balun Feature Summary

• Converts single-ended signals to differential signals using LTCC technology
• Provides impedance transformation between 50-ohm and 150-ohm ports
• Optimized for operation within specific cellular communication frequency bands

Balun Applications

• RF front-end modules in mobile handsets
• Base station transceiver units
• Wireless communication devices operating in GSM/DCS bands

Balun Procurement Notes

Verify the exact datasheet version when sourcing, as specifications may vary slightly between revisions. Confirm that the 150-ohm balanced port matches your circuit design requirements, as this differs from standard 50-ohm to 50-ohm baluns. Ensure compatibility with your PCB footprint and reflow soldering profile before finalizing procurement.

Balun Selection Notes

Select this component when a 50-ohm to 150-ohm impedance transformation is required for balanced antenna or filter interfaces. Consider the physical size constraints of the package relative to other available baluns. Evaluate insertion loss and return loss performance against your system's noise figure and efficiency targets to ensure optimal signal integrity.

Balun Part Context

This part belongs to the HHM series of LTCC baluns from TDK. These components are designed for high-volume manufacturing and offer consistent performance across temperature variations. The series includes various models tailored for different frequency ranges and impedance configurations, allowing designers to standardize on a single family for multiple product lines.

Balun Replacement Considerations

Public confirmed substitute part numbers: None identified.